Polygonum cuspidatum | Japanese knotweed | Wildflowers of

Common or prostrate knotweed, or Polygonum arenastrum, also known as wiregrass, wireweed, matweed or doorweed, grows flat, spreading outward in a dense circular form that can reach 18 inches across with a narrow taproot that can grow as deep.This is a text widget, which allows you to add text or HTML to your sidebar.The very small, white to pinkish-red flowers usually form loose spikes.Sarah Rose IDed this on Spider and Insect Enthusiast Facebook page as Araneus possibly Araneus niveus.Sagebud is a directory of over 20,000 plants including photos and scientific data.

buckwheat family - Common weeds of the northern United

Knotweed leaves differ in the type of hairs found on their surfaces.Learn vocabulary, terms, and more with flashcards, games, and other study tools.Author Topic: Archaeologists do it in holes: Tales from the stratigraphy (Read 8586 times).

Erect Knotweed - Montana Field Guide

This study uses morphometrics and digital image analysis to document domestication syndrome in an annual seed crop, Polygonum erectum L. (erect knotweed), which was cultivated by Native Americans for c. 2,500 years in eastern North America.On the photos which show close-ups of the inflorescence, note that the outer and inner tepals are about equal in size and shape and the segments of the stipules that subtend each leaf (and axillary flower) are rigid, straight and stiffly erect.

The New York Flora Atlas is a source of information for the distribution of plants within the state, as well as information on plant habitats, associated ecological communities, and taxonomy.

Plant Descriptions - Urban Herbs: Medicinal Plants

It produces seeds that are encased in a hard pericarp, or fruit coat.Camassia quamash Common Names black camas, camas, small camas Family Lily Flower Color Blue Short Description The close up pictures of camas show 6 pale to deep blue petals in the form of a star.

General control measures are listed at the end of this article.Carl George from Union College into the field to look at the differences between male and female plants of Japanese knotweed, Fallopia japonica.

Marshelder or Sumpweed | The Office of the State Archaeologist

Knotweed snakeroots Stock Photo - Fotosearch Enhanced. k18008284 Fotosearch Stock Photography and Stock Footage helps you find the perfect photo or footage, fast.The website also provides access to a database and images of plants photos and herbarium specimens found at participating herbaria.Japanese knotweed is a large, bushy plant, about four to ten feet high, with leaves that are broad, with shortpoints at the tip.

Flowers usually grow from leaf axils, and can be seen from summer to fall (Newcomb 1977).